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/*Copyright (C) 2008-2009 Timothy B. Terriberry (tterribe@xiph.org)
You can redistribute this library and/or modify it under the terms of the
GNU Lesser General Public License as published by the Free Software
Foundation; either version 2.1 of the License, or (at your option) any later
version.*/
#if !defined(_qrdec_H)
#define _qrdec_H (1)
#include <zbar.h>
typedef struct qr_code_data_entry qr_code_data_entry;
typedef struct qr_code_data qr_code_data;
typedef struct qr_code_data_list qr_code_data_list;
typedef enum qr_mode
{
/*Numeric digits ('0'...'9').*/
QR_MODE_NUM = 1,
/*Alphanumeric characters ('0'...'9', 'A'...'Z', plus the punctuation
' ', '$', '%', '*', '+', '-', '.', '/', ':').*/
QR_MODE_ALNUM,
/*Structured-append header.*/
QR_MODE_STRUCT,
/*Raw 8-bit bytes.*/
QR_MODE_BYTE,
/*FNC1 marker (for more info, see http://www.mecsw.com/specs/uccean128.html).
In the "first position" data is formatted in accordance with GS1 General
Specifications.*/
QR_MODE_FNC1_1ST,
/*Mode 6 reserved?*/
/*Extended Channel Interpretation code.*/
QR_MODE_ECI = 7,
/*SJIS kanji characters.*/
QR_MODE_KANJI,
/*FNC1 marker (for more info, see http://www.mecsw.com/specs/uccean128.html).
In the "second position" data is formatted in accordance with an industry
application as specified by AIM Inc.*/
QR_MODE_FNC1_2ND
} qr_mode;
/*Check if a mode has a data buffer associated with it.
Currently this is only modes with exactly one bit set.*/
#define QR_MODE_HAS_DATA(_mode) (!((_mode) & (_mode)-1))
/*ECI may be used to signal a character encoding for the data.*/
typedef enum qr_eci_encoding
{
/*GLI0 is like CP437, but the encoding is reset at the beginning of each
structured append symbol.*/
QR_ECI_GLI0,
/*GLI1 is like ISO8859_1, but the encoding is reset at the beginning of each
structured append symbol.*/
QR_ECI_GLI1,
/*The remaining encodings do not reset at the start of the next structured
append symbol.*/
QR_ECI_CP437,
/*Western European.*/
QR_ECI_ISO8859_1,
/*Central European.*/
QR_ECI_ISO8859_2,
/*South European.*/
QR_ECI_ISO8859_3,
/*North European.*/
QR_ECI_ISO8859_4,
/*Cyrillic.*/
QR_ECI_ISO8859_5,
/*Arabic.*/
QR_ECI_ISO8859_6,
/*Greek.*/
QR_ECI_ISO8859_7,
/*Hebrew.*/
QR_ECI_ISO8859_8,
/*Turkish.*/
QR_ECI_ISO8859_9,
/*Nordic.*/
QR_ECI_ISO8859_10,
/*Thai.*/
QR_ECI_ISO8859_11,
/*There is no ISO/IEC 8859-12.*/
/*Baltic rim.*/
QR_ECI_ISO8859_13 = QR_ECI_ISO8859_11 + 2,
/*Celtic.*/
QR_ECI_ISO8859_14,
/*Western European with euro.*/
QR_ECI_ISO8859_15,
/*South-Eastern European (with euro).*/
QR_ECI_ISO8859_16,
/*ECI 000019 is reserved?*/
/*Shift-JIS.*/
QR_ECI_SJIS = 20,
/*UTF-8.*/
QR_ECI_UTF8 = 26
} qr_eci_encoding;
/*A single unit of parsed QR code data.*/
struct qr_code_data_entry {
/*The mode of this data block.*/
qr_mode mode;
union {
/*Data buffer for modes that have one.*/
struct {
unsigned char *buf;
int len;
} data;
/*Decoded "Extended Channel Interpretation" data.*/
unsigned eci;
/*Decoded "Application Indicator" for FNC1 in 2nd position.*/
int ai;
/*Structured-append header data.*/
struct {
unsigned char sa_index;
unsigned char sa_size;
unsigned char sa_parity;
} sa;
} payload;
};
/*Low-level QR code data.*/
struct qr_code_data {
/*The decoded data entries.*/
qr_code_data_entry *entries;
int nentries;
/*The code version (1...40).*/
unsigned char version;
/*The ECC level (0...3, corresponding to 'L', 'M', 'Q', and 'H').*/
unsigned char ecc_level;
/*Structured-append information.*/
/*The index of this code in the structured-append group.
If sa_size is zero, this is undefined.*/
unsigned char sa_index;
/*The size of the structured-append group, or 0 if there was no S-A header.*/
unsigned char sa_size;
/*The parity of the entire structured-append group.
If sa_size is zero, this is undefined.*/
unsigned char sa_parity;
/*The parity of this code.
If sa_size is zero, this is undefined.*/
unsigned char self_parity;
/*An approximate bounding box for the code.
Points appear in the order up-left, up-right, down-left, down-right,
relative to the orientation of the QR code.*/
qr_point bbox[4];
};
struct qr_code_data_list {
qr_code_data *qrdata;
int nqrdata;
int cqrdata;
};
/*Extract symbol data from a list of QR codes and attach to the image.
All text is converted to UTF-8.
For binary/byte mode QR codes: if configured with ZBAR_CFG_BINARY,
the bytes will be returned as is. Otherwise, the encoding will be
automatically determined and the data will be converted to that character set.
Any structured-append group that does not have all of its members is decoded
as ZBAR_PARTIAL with ZBAR_PARTIAL components for the discontinuities.
Note that isolated members of a structured-append group may be decoded with
the wrong character set, since the correct setting cannot be propagated
between codes.
Return: The number of symbols which were successfully extracted from the
codes; this will be at most the number of codes.*/
int qr_code_data_list_extract_text(const qr_code_data_list *_qrlist,
zbar_image_scanner_t *iscn,
zbar_image_t *img);
/*TODO: Parse DoCoMo standard barcode data formats.
See http://www.nttdocomo.co.jp/english/service/imode/make/content/barcode/function/application/
for details.*/
#endif
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